TrsutedReviews posted a comparison review between the the Sapphire Radeon X800 XL 'Ultimate' vs AOpen Aeolus 6800 graphics cards

On its launch ATI’s X800 XL was pitched by the Canadian company as its
answer to nVidia’s GeForce 6800 GT. And just as the 6800 GT was for
nVidia, the XL has proven to be a great success for ATI. It’s not hard to
see why. With a full 16-pipeline architecture and 256-bit memory
interface it offered all the features and most of the performance of its
higher end siblings, but crucially, without the cost.

Sapphire Radeon X800 XL 'Ultimate' vs AOpen Aeolus 6800